What others have already suggested--going to a store that specializes in running--and taking a few mins to figure out what you need is the best option. From there, the previous generation or two of shoes that fit your needs can offer great cost savings.
All that being said, if you are just looking for a quick answer / run of the mill shoe, that is a good value I'll throw out:
Nike Pegasus 39; A workhorse of a shoe that will take a lot of miles before you have to replace
Saucony Triumph or Saucony Kinvara which are, for me, a bit more comfortable but not quite as hard wearing
The stores I buy from have pretty open return policies if the shoes don't work. Fleet Feet, for example, has like sixty days or something? I ran about fifty miles in a pair from them before I had to admit that they were too tight. They accepted them back and refunded me in full, and when I asked what happens to the pair of shoes, they told me it just gets donated.
This is all a long way of saying that if you can find a shop with a generous return policy then you can expect that their to priority will be to get you in a shoe that works. (Of course this might just be an option in USA.)
If you go to a dedicated running store they’ll typically be very knowledgeable and want to help. If you go to a footlocker or champs style store they are trying to hit their sales goals, there is a difference (though not always true in every case). I would suggest going to a local running store and being clear with your intentions